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Topic: Toluenesulfonyl chloride: Why within ice?  (Read 2478 times)

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Offline Skybydo

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Toluenesulfonyl chloride: Why within ice?
« on: September 08, 2011, 02:12:47 PM »
Why do you have to put Toluenesulfonyl chloride into ice when doing a reaction with it?
The boiling point is 134°C, so it would be liquid at room temperature, wouldn't it?
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Offline Honclbrif

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Re: Toluenesulfonyl chloride: Why within ice?
« Reply #1 on: September 08, 2011, 04:15:22 PM »
The key here is the "doing a reaction with it" part.

Why would you cool a reaction?
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Offline Skybydo

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Re: Toluenesulfonyl chloride: Why within ice?
« Reply #2 on: September 08, 2011, 05:04:08 PM »
To absorb the energy from the reaction and to stop other unwanted reactions?
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Offline Dan

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Re: Toluenesulfonyl chloride: Why within ice?
« Reply #3 on: September 08, 2011, 05:16:56 PM »
Yes, TsCl usually reacts quite rapidly and exothermically, so cooling is generally employed to slow down the reaction and prevent a runaway exotherm (which may lead to unwanted side reactions).

The melting point of TsCl is ~65oC by the way, it's a crystalline solid at rtp.
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